Senior Backend Engineer (B2B Contract) in UK at Jobgether

This position is posted by Jobgether on behalf of a partner company. We are currently looking for a Senior Backend Engineer (B2B Contract) in United Kingdom.

This is a high-impact opportunity for an experienced backend engineer to contribute to the development of advanced infrastructure supporting modern software security solutions. In this role, you will design and build scalable backend systems that power critical applications, working in a fast-paced and technically challenging environment. You’ll collaborate with cross-functional teams to define architecture and deliver robust, high-performance APIs. The position offers the chance to tackle complex engineering problems while ensuring reliability, scalability, and security at every layer. As a senior contributor, you will also influence technical direction and mentor other engineers. This role is ideal for someone who values clean code, strong system design, and meaningful technical impact.

• Design, develop, and maintain scalable backend systems and APIs to support core platform functionalities
• Collaborate with product managers, frontend developers, and other stakeholders to define technical requirements and system architecture
• Optimize application performance, scalability, and security through best practices, testing, and code reviews
• Troubleshoot, debug, and resolve production issues with a focus on minimizing downtime and ensuring system reliability
• Contribute to architectural decisions and continuously improve system design and development processes
• Mentor and support junior engineers, fostering knowledge sharing and technical growth within the team
• Conduct system evaluations and proactively identify opportunities for optimization and innovation

• Bachelor’s degree in Computer Science or a related field (or equivalent practical experience)
• At least 5 years of experience in backend development, building scalable and reliable applications
• Strong proficiency in Node.js and modern backend development frameworks
• Solid experience with both SQL and NoSQL databases and data modeling best practices
• Familiarity with cloud environments and microservices architecture
• Strong understanding of system design, performance optimization, and secure coding practices
• Excellent problem-solving skills and attention to detail
• Ability to write clean, maintainable, and well-documented code
• Strong communication skills and ability to work effectively in a collaborative environment

• Competitive B2B contract compensation aligned with experience and expertise
• Flexible remote work arrangements within Germany
• Opportunity to work on cutting-edge technologies in a high-growth, innovative environment
• Exposure to complex, large-scale system design challenges
• Collaborative and engineering-driven culture with strong knowledge-sharing practices
• Autonomy and ownership over technical decisions and project execution
• Long-term contract potential with impactful and meaningful work